feat: add Gantry race control overlay - #654

Draft

23Kev wants to merge 15 commits into

tariknz:mainfrom

23Kev:feat/gantry-v2

Commits on Aug 7, 2026

feat(gantry): replant race-control overlay onto current main

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507711c
fix(gantry): stop treating a missing speed reading as 0 km/h

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b81a881
fix(gantry): classify off-track stops as crashes, ignore the grid teleport

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d5c4cb7
feat(gantry): infer car-to-car contact and report it as a crash

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9bc7c07
fix(gantry): make the standings and lap graph actually live

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a246137
perf(gantry): stop incident storage blocking the main process

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22c5d70
fix(gantry): only report stopped cars as crashes during a race

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a47a5b8
fix(gantry): only call it contact when someone actually lost speed

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c636b74
fix(gantry): show gap and interval, and make the lap graph readable

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ae9d9b0
fix(gantry): clear lap gaps when the session changes

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3ba73a6
refactor(gantry): move incident detection onto a processor and channel

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00f7591
feat(gantry): add units picker and tidy up settings

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5762599
feat(gantry): add tooltips across the race control window

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d91da94
chore: ignore local-only files

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53f31f5
refactor(gantry): use the shared speed util

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f6d1513